The basic principle of metal spinning technology is similar to ancient pottery production technology. The spinning forming parts are generally mouth-rotating cylindrical parts or dish-shaped parts, and the brigade-pressing part bracelets are usually rough cylindrical parts or circular plates. The principle and structure of the brigade press are similar to the metal cutting lathe. In the position of the large carriage of the lathe, it is designed with a rotating wheel frame with axial movement power. The rotating wheel fixed on the rotating wheel frame can move radially; a core mold (shaft) is coaxially connected with the main shaft. , The spinning blank is sleeved on the mandrel (shaft); the rotary wheel is passively rotated by the friction force generated by the contact with the blank on the mandrel (shaft); at the same time, the rotary wheel carrier is in the axial direction with a large thrust cylinder Under the action of, make axial movement.